Summary of the invention
The system and the method thereof that the object of the present invention is to provide the gentle vapour of a kind of multi-stage evaporation to mix, it has overcome the defective that prior art exists, solved existing problem, finish the repeatedly evaporation and the condensation of mixing material by a plurality of nozzles and multi-stage evaporation tower, promote mixing material fully to evaporate and evenly mix with the gas of input tower body.
Technical solution of the present invention is as follows:
The system that the gentle vapour of a kind of multi-stage evaporation mixes comprises multi-stage evaporation tower, sends into cascade control system, heater and three nozzles of liquid charging stock;
Described multi-stage evaporation tower comprises tower body and the tower seat that is divided into three sections by two disconnected column plates, is equipped with the downspout that is communicated with its upper and lower two sections tower bodies on the described disconnected column plate;
The epimere tower body is provided with gas vapour products export, charging aperture, gas vapor inlet and liquid outlet successively from the top to the bottom; The stage casing tower body is provided with gas vapor outlet, gas vapor inlet and liquid outlet successively from top to the bottom; The hypomere tower body is provided with gas vapor outlet, gas vapor inlet, liquid outlet and leakage fluid dram successively from top to the bottom;
First nozzle connects the gas vapor inlet of gas feed and hypomere tower body, and first nozzle bottom connects heater; Second nozzle connects the gas vapor inlet of stage casing tower body and the gas vapor outlet of hypomere tower body, and second nozzle bottom connects the liquid outlet of stage casing tower body; The 3rd nozzle connects the gas vapor inlet of epimere tower body and the gas vapor outlet of stage casing tower body, and the 3rd nozzle bottom connects the liquid outlet of epimere tower body;
Described cascade control system is by the charging aperture of pipeline connection multi-stage evaporation tower, and cascade control system connects the liquid outlet of heater base and hypomere tower body again by branched pipe.
The present invention takes following further technical measures:
Described cascade control system comprises the control valve of two adjustable throttle amounts that are in series, and two control valves respectively connect the feedstock pump of sending into liquid charging stock and the charging aperture of multi-stage evaporation tower; Be provided with a branched pipe between two control valves, this branched pipe connects the liquid outlet of heater base and hypomere tower body respectively.
Described epimere tower body inside is provided with mist eliminator from gas vapour products export between the charging aperture; Described charging aperture is to being provided with several layers of horizontally disposed tower tray between the gas vapor inlet.
The gas vapour products export on described tower body top and the tower wall between the mist eliminator are provided with thermometer boss and pressure tap.
The gas vapour products export on described tower body top and the tower wall between the thermometer boss are provided with manhole; The tower wall of described tower seat bottom is provided with manhole.
The position of the inherent corresponding charging aperture of described tower body is provided with the charging baffle plate, and this charging baffle plate is a perpendicular type, and its level board face connects the tower wall, and vertical plate is in the face of accurate charging aperture.
The tower wall of described tower seat is provided with leakage fluid dram, is connected with the discharge raffinate by pipeline between leakage fluid dram and the tower body bottom.
A kind of method of implementing the system of the gentle vapour mixing of multi-stage evaporation of the present invention, it may further comprise the steps:
A, send into respectively in multi-stage evaporation tower top tower body and the heater after liquid charging stock regulated by cascade control system shunting;
B, the liquid of partially liq raw material and multi-stage evaporation tower bottom is sent into heater together, liquid mixture is heated in heater;
C, gas is sent into first nozzle, mix the liquid mixture in the evaporation heater and gas vapour mixture is delivered in the hypomere tower body of multi-stage evaporation tower;
D, will enter second nozzle from the gas vapour of hypomere tower body, the liquid of evaporation multi-stage evaporation midsection bottom, the mixture of formation is sent in the multi-stage evaporation midsection;
E, will enter the 3rd nozzle from the gas vapour of stage casing tower body, the liquid of evaporation multi-stage evaporation tower epimere bottom, the mixture of formation is sent in the multi-stage evaporation tower epimere;
F, multi-stage evaporation top of tower are discharged gas vapour mixture finished product, and the liquid bottom will being back to from multi-stage evaporation tower top tower body is sent into the heater heating, and the raffinate that stays is discharged from leakage fluid dram.
Also comprise before the described steps A: the liquid charging stock that prestores enters the various flows value of multi-stage evaporation tower top and heater.
In the described steps A, cascade control system is by the flow of the control valve adjusting two-way liquid charging stock of two adjustable throttle amounts, and control valve is regulated the flow of two-way liquid charging stock according to the flow value that prestores.
The present invention makes it to compare with existing evaporator owing to adopted above technical scheme, has the following advantages and positive effect:
The present invention finishes the repeatedly evaporation and the condensation of mixing material by a plurality of nozzles and multi-stage evaporation Tower System, promotes mixing material fully to evaporate and evenly mixes with the gas of input tower body; Its floor space is little, and control is simple; In multi-stage evaporation tower, owing to have gas, therefore reduced the vapor partial pressure of liquid, can promote that liquid evaporates at a lower temperature; The higher component of gas vapour mid-boiling point in the multi-stage evaporation tower is repeatedly condensed and is become drop, liquid repeatedly with gas vapour mass-and heat-transfer, help the abundant mixing of the gentle vapour of abundant evaporation of liquid.
The specific embodiment
Specifically introduce a preferred embodiment of the system of the gentle vapour mixing of multi-stage evaporation of the present invention below in conjunction with accompanying drawing 1~3.
Referring to Fig. 1, the system that the gentle vapour of a kind of multi-stage evaporation of the present invention mixes is made up of multi-stage evaporation tower 30, the cascade control system 36 of sending into liquid charging stock, heater 34 and three nozzles 31,32,33.
Referring to Fig. 2, multi-stage evaporation tower 30 is made up of tower seat 1 and tower body 10.Tower body 10 is one and is divided into three sections tower body 10 by two blocks of disconnected column plates 6,9, on the disconnected column plate 6,9 downspout 3,22 that is communicated with its two sections tower bodies in upper and lower is set all.By being welded to connect, all liq evaporation and gas-liquid blend step all carry out in tower body 10 between tower seat 1 and the tower body 10.
Tower body inside connects disconnected column plate 6,9, tower tray 18 and mist eliminator 17 by bolt.Charging baffle plate 11 and tower body 10 are by being welded to connect.Between at the bottom of the first disconnected column plate 6 and the tower is the hypomere of multi-stage evaporation tower 30, is the stage casing of multi-stage evaporation tower 30 between the first disconnected column plate 6 and the second disconnected column plate 9, is the epimere of multi-stage evaporation tower 30 between the second disconnected column plate 9 and the cat head.
The tower wall of hypomere tower body is provided with gas vapor inlet 23 gentle vapor outlets 5, and gas vapor inlet 23 gentle vapor outlets 5 are along the axle center symmetric arrangement of tower body 10, and are highly different.The bottom of hypomere tower body is provided with a liquid outlet 24, and liquid enters in other vaporising device such as the heater 34 by liquid outlet 24.The first disconnected column plate 6 is provided with downspout 3, and downspout 3 is communicated with hypomere tower body and stage casing tower body.In the hypomere tower body, on Qi Tabi, be provided with the interface of the level gauge 4 of two differing heights, so that liquid level gauge to be installed, be used to measure the liquid level of hypomere tower body bottom.These two interface of the level gauge 4 all are lower than the gas vapor inlet 23 gentle vapor outlets 5 in this section tower body 10.On the tower wall of tower seat 1, be provided with leakage fluid dram 25, be connected by steel pipe between leakage fluid dram 25 and tower body 10 bottoms, derive the liquid that converges at the bottom of the tower.
The tower wall of stage casing tower body is provided with gas vapor inlet 8 gentle vapor outlets 21, and gas vapor inlet 8 gentle vapor outlets 21 are along the axle center symmetric arrangement of tower body 10, and are highly different.The top edge of the first disconnected column plate 6 is provided with a liquid outlet 7, and liquid enters other vaporising device as in second nozzle 32 by liquid outlet 7.The second disconnected column plate 9 is provided with downspout 22, and downspout 22 is communicated with stage casing tower body and epimere tower body.
The tower wall of epimere tower body is provided with charging aperture 12, and the position of tower body 10 inherent corresponding charging apertures 12 is provided with charging baffle plate 11, and this charging baffle plate 11 is a perpendicular type, and charging is flow on the tower tray 18 on request, and its level board face connects the tower wall, and vertical plate is in the face of accurate charging aperture 12.Along horizontal plane ten layers of non-partition-type tower tray 18 are installed in the tower body 10 below charging aperture 12,1#~10# has represented one to ten layer of non-partition-type tower tray 18 among the figure.On the tower wall of tower body 10 below ten layers of tower tray 18, be provided with gas vapor inlet 19.Mist eliminator 17 is set above charging aperture 12.Gas vapour products export 14 is set on the top of tower body 10.Between the tower wall of the edge of tower tray 18 and tower body 10, all leave gas vapour passage.Face the axle center symmetric arrangement of the gas vapour passage of two-layer tower tray 18 along tower body 10 mutually, tower tray 18 has increased the surface area that liquid mixes with gas vapour and the length of mixture length, and liquid is fully mixed with gas vapour.The top edge of the second disconnected column plate 9 is provided with a liquid outlet 20, and liquid enters other vaporising device as in the 3rd nozzle 33 by liquid outlet 20.According to differing heights manhole 15, thermometer boss 13 and pressure tap 16 are set respectively on the tower wall of tower body 10 from gas vapour products export 14 to mist eliminator 17.Thermometer boss 13 connects thermometer, and pressure tap 16 connects pressure gauge, can be to temperature and the pressure data in the outside sends multi-stage evaporation tower epimere tower body, with the temperature and pressure of control tower.
On the tower wall of tower seat 1 bottom manhole 2 is set, the maintenance personal can enter in the tower body 10 by the manhole 15 and the manhole 2 of diverse location, carries out the maintenance repair operation.
Referring to Fig. 1, gas vapor inlet 23, the first nozzles 31 bottoms that first nozzle 31 connects gas feed and hypomere tower body connect heater 34 again.The gas vapor inlet 8 of second nozzle, 32 connection stage casing tower bodies and gas vapor outlet 5, the second nozzles 32 bottoms of hypomere tower body connect the liquid outlet 7 of stage casing tower body.The gas vapor inlet 19 of the 3rd nozzle 33 connection epimere tower bodies and gas vapor outlet 21, the three nozzles 33 bottoms of stage casing tower body connect the liquid outlet 20 of epimere tower body.
Cascade control system 36 is by the charging aperture 12 of pipeline connection multi-stage evaporation tower 30, and cascade control system 36 connects the liquid outlet 24 of heater 34 bottoms and hypomere tower body again respectively by branched pipe.This cascade control system 36 comprises the control valve of two adjustable throttle amounts that are in series, and two control valves respectively connect the feedstock pump 35 of sending into liquid charging stock and the charging aperture 12 of multi-stage evaporation tower 30.Be provided with a branched pipe between two control valves, this branched pipe connects the liquid outlet 24 of heater 34 bottoms and hypomere tower body respectively.
Referring to Fig. 3, by the method that the gentle vapour of a kind of multi-stage evaporation of the present invention mixes, the system that adopts the gentle vapour of above-mentioned multi-stage evaporation to mix, this method may further comprise the steps:
1, the liquid charging stock that prestores enters the various flows value of multi-stage evaporation tower 30 tops and heater 34.
2, after being regulated by cascade control system 36 shunting, liquid charging stock sends into respectively in multi-stage evaporation tower 30 top tower bodies and the heater 34.Cascade control system 36 is by the flow of the control valve adjusting two-way liquid charging stock of two adjustable throttle amounts, and control valve is regulated the flow of two-way liquid charging stock according to the flow value that prestores.
3, the liquid of partially liq raw material and multi-stage evaporation tower 30 bottoms is sent into heater 34 together, add liquid mixture in the hot heater 34 by thermal material.
4, gas is sent into first nozzle 31, the liquid mixture that mixes in the evaporation heater 34 is also delivered to gas vapour mixture in the hypomere tower body of multi-stage evaporation tower 30.
5, will enter second nozzle 32 from the gas vapour of hypomere tower body, the liquid of bottom, evaporation multi-stage evaporation tower 30 stage casings, the mixture of formation is sent in multi-stage evaporation tower 30 stage casings.
6, will enter the 3rd nozzle 33 from the gas vapour of stage casing tower body, the liquid of evaporation multi-stage evaporation tower 30 epimeres bottom, the mixture of formation is sent in multi-stage evaporation tower 30 epimeres.
7, gas vapour mixture finished product is discharged at multi-stage evaporation tower 30 tops, and the liquid bottom will being back to from multi-stage evaporation tower 30 top tower bodies is sent into heater 34 heating, and the raffinate that stays is discharged from leakage fluid dram 25.
In conjunction with referring to Fig. 1 and Fig. 2, liquid charging stock is sent in multi-stage evaporation tower 30 tops and the heater 34 by feedstock pump 35 pressurizations, and according to set point adjustment, the raw material that enters from multi-stage evaporation tower 30 tops plays the effect of backflow to both flows by cascade control system 36.Another part raw material and multi-stage evaporation tower 30 bottom liquids are admitted to heater 34 together, and liquid mixture is heated in heater 34.
Gas enters first nozzle 31, in first nozzle 31, form low-pressure area and reduce the liquid vapour dividing potential drop, thereby form evaporation power, this evaporation power makes the liquid mixture evaporation that reaches uniform temperature in the heater 34, and gas vapour mixture is delivered in the multi-stage evaporation tower 30 hypomere tower bodies.After the gas vapour that contains raw material enters the hypomere of multi-stage evaporation tower from gas vapor inlet 23, because flow velocity reduces, increased pressure, the higher component of boiling point forms drop and comes together at the bottom of the tower, the gas vapour that separates the higher drop of boiling point enters other vaporising device as in second nozzle 32 by gas vapor outlet 5, the liquid that converges at the bottom of the tower enters in other vaporising device such as the heater 34 by liquid outlet 24, is difficult to evaporated liquid and discharges from leakage fluid dram 25.
Gas vapour from the hypomere tower body forms low-pressure area and reduces the liquid vapour dividing potential drop in second nozzle 32, thereby forms evaporation power, and this evaporation power makes the liquid evaporation of multi-stage evaporation midsection bottom, and the mixture of formation is sent in the multi-stage evaporation midsection.Because flow velocity reduces, increased pressure, the higher component of boiling point forms drop and comes together on the first disconnected column plate 6, the gas vapour that separates the higher drop of boiling point enters other vaporising device as in the 3rd nozzle 33 by gas vapor outlet 21, the liquid that converges to the first disconnected column plate 6 enters other vaporising device as in second nozzle 32 by liquid outlet 7, and excess liquid enters the hypomere tower body from downspout 3.
Gas vapour from the stage casing tower body forms low-pressure area and reduces the liquid vapour dividing potential drop in the 3rd nozzle 33, thereby forms evaporation power, and this evaporation power makes the liquid evaporation of multi-stage evaporation tower epimere bottom, and the mixture of formation is sent in the multi-stage evaporation tower epimere.Because flow velocity reduces, increased pressure, the higher component of boiling point forms drop and comes together on the second disconnected column plate 9, the gas vapour that separates the higher drop of the boiling point raw material liq that descends that moves upward and reflux carries out mass-and heat-transfer on tower tray 18, its heavy ends condense into downward liquid flow and converge on the second disconnected column plate 9, gas vapour continues to move upward, under in mist eliminator 17, drop being captured, the gas vapour that does not contain liquid enters next procedure from 14 discharges of gas vapour products export, the liquid that converges on the second disconnected column plate 9 enters other vaporising device as in the 3rd nozzle 33 by liquid outlet 20, and excess liquid enters the stage casing tower body from downspout 22.
Meet the requirements of gas vapour mixture and be sent to next procedure from the multi-stage evaporation top of tower, the liquid bottom will being back to from multi-stage evaporation tower 30 top tower bodies is sent into heater 34, and the high-temp liquid that will be difficult to evaporate is discharged from the leakage fluid dram 25 of multi-stage evaporation tower bottom simultaneously.
In summary, the present invention finishes the repeatedly evaporation and the condensation of mixing material by a plurality of nozzles and multi-stage evaporation Tower System, promotes mixing material fully to evaporate and evenly mixes with the gas of input tower body; Its floor space is little, and control is simple; In multi-stage evaporation tower, owing to have gas, therefore reduced the vapor partial pressure of liquid, can promote that liquid evaporates at a lower temperature; The higher component of gas vapour mid-boiling point in the multi-stage evaporation tower is repeatedly condensed and is become drop, liquid repeatedly with gas vapour mass-and heat-transfer, help the abundant mixing of the gentle vapour of abundant evaporation of liquid.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the present invention, and be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention conversion, the modification of the foregoing description.